We carry a complete line of Quads and Multiplexors.

ST-450(T) 4 channel B&W Quad
ST-450 4 channel B&W Quad w/playback zoom
ST-850 8 channel B&W Quad w/playback zoom
ST-460(T) 4 channel Color Quad
ST-460 4 channel Color Quad w/playback zoom
ST-860 8 channel Color Quad w/playback zoom
MLPX-16C 16 channel Color/B&W Full Duplex Multiplexor with many high end features.